Machine for applying threaded bottle caps



A. l. RISSER` MACHINE FOR APPLYING THREADED BOTTLE C-APS Filed Aug. 1.- 1930 YMay 31, 1932.

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MACHINE FOR APPLYING THREADED BOTTLE CAPS Filed Aug. l; 1930 3 Sheets-Sheet 2 May 31, 1932. A. l. RlssER MACHINE FOR APPLYING THREADED BOTTLE CAPS Filed Aug. l, 1930 3 Sheets-Sheet 3 Patented May 31, ..1932

Y UNI-TED srnrns PATENT oFF-ICE? a tarn-m11..nissan,crammed-rumors, Assmann-fron. si. BorrrEiasfMacHrN-mr COMPENY, OECHICAGG, kILLINOIS, `A COR-IDORATIONOF IL'LLNOIS Y MACHINE `FOR APPLYING TIREADEDLBOTTLE CAPS .Application med Augusta, 193e. serial 'naamw-1.

Theinvention relates to machines, such as yshown in` my application Serial 'Number 3`54`,0131,iiled April 10, 1929,' and Patent Number 1,748,961, dated March4, V1930, for applying threaded caps to bottles yor other containers, and' among the objects of the invention is rtopi-Ovide an improved capping head or cap applyingnier'nber which is adapted to operate'in a positive manner especially on the small size caps, and which will pick up the cap aligned inthe head, place the cap squarely on the bottle and v.start thethreaded engagement of the rcap With the bottle with a light yielding'pressure*so that the cap Will not be-v come cocked kor the y threads crossed or @ther objects and advantages Will become apparent inthey following description, with reference to the accompanying drawings, 1n

Fig.` 1l isa sectionV vieiv ot the general cap applyinglmechanisni of. a turret type of Inachine, similar tofthe machine more fully shown inf'the application' mentioned above, 1 *this 4machine being chosen'merelyfforthe purpose Vo'ill'ustrating. this invention, as the improvements embodied thereinV and pointed i vout hereinafter `may beused in othertypes of machines.

Fig'.` 2: is a plan View of said mechanism with parts-broken away, parts omitted, and parts shovvn'insection.

Fig'. 3 isa diagram'of-the 'operation` ofthe machine.

Figs. '4, 5', and 6 are cross sectional views of kthe .capping head. Ink Fig. 4 the partsv are shown-imposition for 'picking up the thready ed cap C, corresponding to theposition 4 in Fig.v 3; Fig. 5 'showsanfintermediate posi- 'i tion indicated inbreken lines at 5inFig.`3;

and Fig: 6 showsthe capfully' applied to the The j'spiderhub andthe 'hub otra cross yoke 11 are fiX'edly supported'in-t-hefframe 'oil the machine, asl'fullyfsliown and described,V

in said application, wherein the corresponding parts are numbered 37 and 41 respective- 1y. VrThe hubs 10 and 11.arenaverticalialignment, andinthe heb L10^isv rotatably mounted 'the turret' 'shaft 12,' which is'constan'tly rotated' -alsuitableV application of power through the bevel.A gear 14 pinned onthelovv er end'` of the shaft 12, Which meshes With abevel' pinion 15'tiXedV on adrive shaft' 16'.

The 'circular-turret bottlefsupport table A18' is pinned to" the yshaft '12 and' rests on lthev stationary hub 10, thereby ysupporting the shaft vertically; and tothe table 18flare' fit'- ted Y poclre'ted members 19 lfor ,holding the bottles B.

. j" 1n the fixed hubv 11;is' keyed a -non-rotating,-

support shaft'20, which is bored out to Yre-kk ceive the reduced upper end portion 210i? 22, formed on the shaft 12,

ona-` collar 24, Apinned on the .shaft 12, is a spindle support ring 25 in which the capping head 4spindles 26 are rotatably and slidably' mountedk if V YKeyed to the shaft 20,. against rotation, is

a flanged support member 27, Which rests on ailat circular1 seat 28 provided at the center of the member 25, and Whichhas a threaded sleeve 29 extending up around the sta` tionary shaft 20. Resting on the upper surface of the'iianged portion of the member 27 isa spur gear'30 which is frictionally held from rotation by being pressed against the meinber`27-by the flanged ring 31 and hand YWheel follower` 32 Which threads onto the sleeve 29.' Then,` as the member 25 is turned 4 With the shaft 12, the spindles 26 are rotated bythe pinions 34.W`hich mesh With the sta- Y tionary 'central gear 30. 'The pinions 34 are slidably keyedto the spindles 'and areheld ber; 25.

vFor moving the constantly rotating spinbetween lugs 35 andk 36 formed in the memeV dies up anddown and positioning them to pick up, carry, Vstart the threading, andfscrew n the vcap down on the bottles B, retained inl the pockets V19, as shown diagrammatically''- in Fig.V cam f4() Vencircles* the spindle supacconnnodatng"bottles of ,kiliit'erent` heights, bylascrew 41 Which threads'intothe' upper -96' port ring 25', and is adjustably supported, forV nected by depending rods 43 to a spider 44, slidably keyed to the shaft 20. To the ends of the radially extending arms 45 of the spider 44, are secured depending bars 46 which are bolted to the upper and lower rings 47 and 471 of the cam 40, the rings being spaced to form the cam groove 48, in which ride the rollers 49.

The rollers 49 are journaled on' bars 50 which are slidably guided in vertical grooves 51 in the outer periphery of the ring member 25, and to the lower end of the bars are secured collars 52 which loosely embrace the spindles between a flange 54, integrally l formed on the spindle, and a collar 55, slidable on the spindle and connected thereto for' rotation by a set screw 56, which engages in a slot 561 in the spindle 26. A ball thrust bearing 57 is inserted between the collar 52 20, and the flange 54 to reduce friction from the ressure of the spring 60 which is compressed etween the collar 55 and the shoulder of an enlarged portion 62 of the spindle. The Spindle is hollow, and the eXtreme lower end 25,63is threaded to receive the'clamping nut 64, and integrally formed near the lower end of the spindle is a circular flange 6'5.

The capping head of this invention, comprises, generally, a support `member 66, a 30, vacuum cup 67, and a solid ring chuck 68. The member 66 consists of a circular flange portionw70, pressed into frictional engagement with the under side of the spindle flange by the nut 64 and antifriction washers 71, 35:72 73; and a short hub or sleeve portion 7 5 spaced below the flange 70 and connected thereto by the arm portions 76. A loose facing ring 77 is inserted between rthe flanges 65 and 70 so that the head supportmember 4Qa66is yieldablyconnected to the spindlek for irotation. y n

The chuckring 68 is fixedly pressed into a hollow holderv 80 which isrotatably connected with the member 66 by pin 801 and 465 held with a limited vfree axial vmovement 'thereto by means of the radial pin 81. The pin 81 is fixed in the hub portion `7 5 and has anend lug 82 which engages loosely in a notch SI5/inside of the stem 84 of the holder, lLwhich stem extends through the hub portion l75' and' into the enlarged bore 85 in the end of the spindle.

The vacuum cup lrmoyement is limited by the flange 86, at the to of tl1e-cup,`contacting with the upper inwardly projectingvsx'n'face 87 of the chuck ril?. f f sition shown in Fig. 4 with the lug 82 eno the cup 67 ris rigidly connected a hollow wgtube which extendsvloosely'through theV bore of the holder stem 84 and is lightly held in any position to which it and thecup 67 may be moved by the spring pressed balls 91 Which'areinserted in radial holes 92 in the 65' chuck holder 80, and pressed inwardly by the y 67 is loosely mounted within the chuck ring 68, and its outward' springs 93 which seat against a band 94 encircling the upper portion of the holder 80.

For creating a vacuum in the cup 67 to pick up a bottle cap, connections are provided as follows: On the upper end of the tube 90 is a spherical nipple portion 96, which enters a conical recess 97 in the lower end of the short hollow plunger 98, forming a universal joint between the tubes 90 and plunger 98. The plunger 98 is loosely dis. posed in the bore of the spindle above the tube 90 and is lightly pressed into contact therewith by the spring 99 which seats on a shoulder 100 formed in the bore of the spindle,-the pressure of the spring 99 being less than enough to overcome the friction of the balls 91 in holding the stem 90 in position.

In the side of the tube 98 is threaded a pipe fitting 102 which projects loosely through a slot in the spindle portion 62 and which is connected by flexible pipes 103 and 113 to a. port 104 in the upper surface of the langemember 27, the pipes being connected so that the lower pipe can rotate with ther spindle, through suitable cooperating passages 114 in the collars 55 and 52. The member 27 being stationaryA and the member 25 being in rotation, the member 27 acts as avalve to suitably control Vthe vacuum in the cups 67, in the manner described hereinafter. The pipes 113 are connected through passages 106 by controlling grooves 107 inthelower surface of the member 27 toa vacuum line 108 and connected through a similar groove 117 to an open port 109 in the body of the gear 30. Y

In operation the uncapped bottles B are placed in the pockets 19 as the table 18 rotates, each pocket being in vertical alignment with one of the capping head spindles 26 and the spindle being raised sothat the chuck holder is in the elevated position shown at the right in Figg3.

The movement is to the left in Fig. 3, and projecting over the bottles in position 4 is a shelf 120 fixed in position, on which the caps are yautomatically fed from the magazine 121 by the constantly moving belt 122 against a stop 124 on the table. The mechanism is more fully shown and described in said application.

As the spindle moves over the shelf 120 it is lowered by the short depression 125 in the cam groove 48 and again raised as the spindle moves away from the shelf. In normal or startingcondition the chuck holder 80 is in its lowermostposition, slightly below the pogaging the upper'end of the notch 83, and the vacuum cupy 67 is ypulleddown so that the flange 86. is in contact with the upper chuck ring surface 87 'Y y Consequently, as the head is lowered over the cap on the shelf, the cup ,'67 contacts with thetop of the cap, the chuck is lowered over lLU the cap in the chuck is prevented, and per-,y

fe'ct alignment when the cap is presented to the ,bottle is insured.

At. position 6 the bottle moves into con# tact with the belt 127, mounted at the rear side of the turret ig. 2), which prevents the bottle fromturning in the pockets so that the capcan be screweddown.

At this position the spindle is still held vup by the cam dwell 128,'sor that the cap is retated under the weight of they chuck and holder alone as the cap is finding the'threads on the bottle and starts to movedown under the yengagement of the threads.

Then, at position 7 Vwhen the cap is nearly screwed down, the nal'cam groove depression 129 to the bottom dwelllSO moves the bar V5() all the way down, compressing the spring 60, so that the iinal turning is under heavy pressure.

After the threading is completed, at position 8, Fig. 3, the spindle is lifted back to the starting height by the cam rise 131, and the vacuum in the cup is not broken until the ycup has been pulled as far out of the chuck as it is permitted to move, restoring the parts tor normal or starting position, described above.

I claim zy f l. In a bottle capping machine, a hollow chuck for applying the cap, a vacuum cup forholding the cap, the cup being slidably mounted in the chuck, yieldable means tor- 'holding the cup in'positions to which it may be moved in Vthe chuck,and means for prof ducing a vacuum in the cup. i

2. Ina bottle capping machine, a chuck' for applying the cap, a vacuum cup having a stem slidably and rotatably mounted in the chuck, friction means engaging the stem for holding the cup in positions to which it may be moved in the chuck, and means for pro ducing a vacuumin the cup. Y

3. In abottle capping machine, arotatable chuck for screwing the caps onto the bottles,

'- a vacuum cup having a stem 'slidably and ro-y tatably mounted in the chuck, spring pressed balls mounted in lthe chuckand engaging the stem of the cup, and `means for communicating a vacuum to the cup.

4. In a bottley capping machine, a hollowV rotatable spindle, a chuck mounted on the endet the'spindle, a vacuum cup having a stem rotatably and slidably mounted in thek chuck, ymeans for yieldably holding the'stem of the cup, a plunger slidably mounted in the spindle and resiliently'pressedl into sealing vcontact with the endy ot'said stem,'and means.

forv kcommunieating. a

vacuumy to; the cup through'the plunger.

.5. In f'afbottle' capping machine, a. hollowVA rotatable spindle, a' chuckmountedon theend ofthe spindle, a vacuum cup having afstemslidably' and rotatablymounted inthe chuck,

and having a spherical nipple formed onv the a sealed universali joint, and means for communicating a vacuumk to plunger.

6. Ina bottle capping machine, al rotatable 'x spindle, a. chuck'mounted o-n the endrofthe spindle with a limited axial freedom ofmovement, a vacuum cup slidably androtatably mounted in the chuck, trictional meansf for yieldably holdingthe cup' in ther chuck, and

means for creating a. vacuum in the cup.`

7. Ina bottle capping machine, a hollow spindle, a chuck slidably mounted on the end of the spindle and frictionally connected thereto for rotation, a vacuum cup having a hollow stem rotatably and slidably mounted in the chuck, means .for yieldably holding the stem ofthe cup in positions in the chuck to which the cupmay beV moved, a hollow plunger in the bore of the Spindle and spring pressed into sealing engagement with the end of the stem of the cup, means for applying a vacuum to the plunger, and means for rotating the spindle.

8. In a bottle capping machine, a spindle, a. chuck loosely mounted inthe end of the spindle and frictionally connected thereto for rotation, a vacuum cup rotatably and slidably mounted in the holding` the cup in position in the chuck, a cap support shelf, a bottle support, means for rotating the spindlev and moving the spindle to lower the chuck over a cap on the shelf, then lift the chuck and lower it over the bottle, and means' for creating a vacuum in the cup to pick up the cap on the yshelf and carry Jthe cap to the bottle;

9. In a bottle capping machine, a spindle, a chuck loosely mounted in theend of the spindle and frictionally connected thereto for rotation, a vacuum cup rotataby and slidably lmounted inthe chuck, a cap support shelf, a bottle support, means for rotating `the spindle ing a vacuum inthe cup to pickup the cap, frictional means for holding the cup in the chuck so that the cap is held in fixed relation with the chuck as the cap yis carried to the bottle, the vacuum in the cup being released as the chuck is being lifted from the bottle the cup through thefV chuck,means for frictionallyy so as to pull out the cup and leave the rsame in its lowermost position. Y

10. In a bottle capping machine, a rotatableespindle, a chuck oosely mounted in the 5 end of the spindle and rotatably connected thereto so that the chuck can have a limited axial movement in the spindle, an open ended tube slidably and rotatably mounted in the chuck, means for applying a. vacuum intermittently to said tube to retain the cap on theend thereof and means for holding;r the tube inreceded relation in the chuck so that the cap is held in contact with the chuck- 11. In a bottle capping machine, a rotatable spindle, a hollow chuck loosely mounted in the end of the spindle and rotatably connected thereto so that the chuck can have a limited axial movement in the spindle, a tube rotatably and slidably mounted in the bore of the chuck, means for frictionally holding the tube in position inthe chuck, means for moving the spindle to lower the chuck over acap, and means for applying a vacuum to the tube.

Signed yat Chicago, Illinois, this 15th day 0f July, 1930.

f ARTHUR I. RISSER. 

